Cover cap for extension cord



FIG. 1 is an isometric view of a cover cap for an extension cord showing my new design;

FIG. 2 is a left end elevation view;

FIG. 3 is a right end elevation view;

FIG. 4 is a side elevation view; and

FIG. 5 is another side elevation view thereof. 

The ornamental design for a cover cap for extension cord, as shown. 